77161264 has 20 divisors (see below), whose sum is σ = 152978056. Its totient is φ = 37683072.

The previous prime is 77161241. The next prime is 77161313. The reversal of 77161264 is 46216177.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55389 + ... + 56764.

Almost surely, 2^77161264 is an apocalyptic number.

It is an amenable number.

77161264 is a deficient number, since it is larger than the sum of its proper divisors (75816792).

77161264 is a wasteful number, since it uses less digits than its factorization.

77161264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112204 (or 112198 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 77161264 is about 8784.1484504760. The cubic root of 77161264 is about 425.7288788939.

The spelling of 77161264 in words is "seventy-seven million, one hundred sixty-one thousand, two hundred sixty-four".